Damage detection in composite laminates aeronautics structures through accelerometers network
Over the past twenty years, the increase of use of structural materials in Aerospace is due to many reasons. While the properties of metallic materials are mastered, the risk behavior of composite materials requires monitoring of the structure. That's why many methods of non-destructive testing (NDT) have been implemented and applied for the evaluation of defects in composites.
The purpose of our research is the development of a new NDT tool for detecting delamination damages in aircraft's structures. The principle diagnostic is based on the application of a reproducible impact wave on a composite panel and its propagation trough an accelerometer sensor network. The presence of defects will be identified by the temporal and frequency response change compared to calibrated reference recorded before the damage.
Therefore, in this paper an experimental study of impact behavior of a composite laminate structure will be presented. The panel is made from a guarded composite long carbon fiber laminate. In the study, the shock propagation wave induced in the materials will take into account the fiber orientation (0°, 45°, 90°, -45°) and plies arrangement (plies stacking sequence of tilt-up). First results of this new NDT for detecting damages of an aircraft structure composite demonstrate the wide possibilities of this technique.
If the inline PDF is not rendering correctly, you can download the PDF file here.
J. Higgins B. VanWest NDE and repair of damaged Minotaur fairing shell Composite Structures Vol 67 189-195 2005.
R. Ruzek R. Lohonka J. Jironc Ultrasonic C-Scan and shearography NDI techniques evaluation of impact defects identification NDT&E International Vol 39 132-142 2006.
M. V. Hosur C. R. L. Murthy T. S. Ramamurthy Anita Sheb Estimation of impact-induced damage in CFRP laminates through ultrasonic imaging. NDT&E International Vol.31 No.5 359-374 1998.
Y.Y. Hung Y.S. Chen S.P. Ng L. Liu Y.H. Huang B.L. Luk R.W.L. Ip C.M.L. Wu and P.S. Chung Review and comparison of shearography and active thermography for nondestructive evaluation Materials Science and Engineering Vol. 64 No. 5-6 73-1121 2009.
R. Kažys R. Raišutis E. Žukauskas L. Mažeika A. Vladišauskas Air-coupled ultrasonic testing of CFRP rods by means of guided waves Physics Procedia Vol. 3 185-192 2010.
S. Yashiro J. Takatsubo N. Toyama An NDT technique for composite structures using visualized Lamb-wave propagation Composites Science and Technology 67 3202-3208 2007.
H. Boukabache S. Ksouri C. Escriba J.Y. Fourniols Piezoelectric sensor/actuator network for SHM and damage detection on Airplane Door Asia-Pacific Workshop on Structural Health Monitoring Tokyo Japan 2010
C. Escriba H. Boukabache S. Ksouri M. Lastapis T. Camps J.M. Dilhac S. Rolet J.Y. Fourniols Sensor Network for non destructive control of aeronautics structures: piezo or accelerometer diagnosis? European Workshop on Structural Health Monitoring Sorrento Italy 2010 pp. 388-393.